中国物理B ›› 2021, Vol. 30 ›› Issue (10): 104205-104205.doi: 10.1088/1674-1056/abf0fe

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Variation of electron density in spectral broadening process in solid thin plates at 400 nm

Si-Yuan Xu(许思源)1,2, Yi-Tan Gao(高亦谈)2,3, Xiao-Xian Zhu(朱孝先)2,3, Kun Zhao(赵昆)2,4,†, Jiang-Feng Zhu(朱江峰)1,‡, and Zhi-Yi Wei(魏志义)2,3,4   

  1. 1 School of Physics and Optoelectronic Engineering, Xidian University, Xi'an 710071, China;
    2 Beijing National Laboratory for Condensed Matter Physics, Institute of Physics, Chinese Academy of Sciences, Beijing 100190, China;
    3 University of Chinese Academy of Sciences, Beijing 100049, China;
    4 Songshan Lake Material Laboratory, Dongguan 523808, China
  • 收稿日期:2021-01-27 修回日期:2021-03-04 接受日期:2021-03-23 出版日期:2021-09-17 发布日期:2021-10-08
  • 通讯作者: Kun Zhao, Jiang-Feng Zhu E-mail:zhaokun@iphy.ac.cn;jfzhu@xidian.edu.cn
  • 基金资助:
    Project supported by the National Key Research and Development Program of China (Grant No. 2017YFB0405202), the Major Program of the National Natural Science Foundation of China (Grant No. 61690221), and the General Program of the National Natural Science Foundation of China (Grant No. 11774277).

Variation of electron density in spectral broadening process in solid thin plates at 400 nm

Si-Yuan Xu(许思源)1,2, Yi-Tan Gao(高亦谈)2,3, Xiao-Xian Zhu(朱孝先)2,3, Kun Zhao(赵昆)2,4,†, Jiang-Feng Zhu(朱江峰)1,‡, and Zhi-Yi Wei(魏志义)2,3,4   

  1. 1 School of Physics and Optoelectronic Engineering, Xidian University, Xi'an 710071, China;
    2 Beijing National Laboratory for Condensed Matter Physics, Institute of Physics, Chinese Academy of Sciences, Beijing 100190, China;
    3 University of Chinese Academy of Sciences, Beijing 100049, China;
    4 Songshan Lake Material Laboratory, Dongguan 523808, China
  • Received:2021-01-27 Revised:2021-03-04 Accepted:2021-03-23 Online:2021-09-17 Published:2021-10-08
  • Contact: Kun Zhao, Jiang-Feng Zhu E-mail:zhaokun@iphy.ac.cn;jfzhu@xidian.edu.cn
  • Supported by:
    Project supported by the National Key Research and Development Program of China (Grant No. 2017YFB0405202), the Major Program of the National Natural Science Foundation of China (Grant No. 61690221), and the General Program of the National Natural Science Foundation of China (Grant No. 11774277).

摘要: The generation of continuous spectrum centered at 400 nm from solid thin plates is demonstrated in this work. A continuum covering 365 nm to 445 nm is obtained when 125-μJ frequency-doubled Ti:sapphire laser pulses are applied to six thin fused silica plates at 1-kHz repetition rate. The generalized nonlinear Schrödinger equation simplified for forward propagation is solved numerically, the spectral broadening with the experimental parameters is simulated, and good agreement between simulated result and experimental measurement is achieved. The variation of electron density in the thin plate and the advantage of a low electron density in the spectral broadening process are discussed.

关键词: nonlinear spectral broadening, time-dependent nonlinear Schrödinger equation, self-phase modulation, electron density

Abstract: The generation of continuous spectrum centered at 400 nm from solid thin plates is demonstrated in this work. A continuum covering 365 nm to 445 nm is obtained when 125-μJ frequency-doubled Ti:sapphire laser pulses are applied to six thin fused silica plates at 1-kHz repetition rate. The generalized nonlinear Schrödinger equation simplified for forward propagation is solved numerically, the spectral broadening with the experimental parameters is simulated, and good agreement between simulated result and experimental measurement is achieved. The variation of electron density in the thin plate and the advantage of a low electron density in the spectral broadening process are discussed.

Key words: nonlinear spectral broadening, time-dependent nonlinear Schrödinger equation, self-phase modulation, electron density

中图分类号:  (Beam trapping, self-focusing and defocusing; self-phase modulation)

  • 42.65.Jx
42.65.Re (Ultrafast processes; optical pulse generation and pulse compression) 42.65.Ky (Frequency conversion; harmonic generation, including higher-order harmonic generation) 42.65.Hw (Phase conjugation; photorefractive and Kerr effects)